One crash pattern observed:

Sim actors can be the usual figure/prop, or both Daz primitives with sufficient vertex density.

-after dynamic simulation, press Vertices Tools + Vertices Group tab

-try to load material group = produce error message

-nothing can be done any further for this simulation session

-attempt to exit VWD = crash hang

-Task manager to force close VWD

-In DS, everything seems normal. Click on VWD action button to launch next sim session

-DS crash hang

-Task manager or Ctrl Alt Del to force close DS